Sun Microsystems EDT S16A User Manual

Input and Output

S16A User’s Guide

18

EDT, Inc.  October, 1996

Write a specified value to the DIO Data register. Only the low 12 bits are significant; of these, bits that are
configured as inputs are ignored when written.

int s16a_set_dio_data_reg(S16aDev *s16a_p, int value);

S16A device handle returned from s16a_open

Value to write to the DIO Data register.

Returns 0 on success or –1 on failure. Fails if s16a_p does not refer to an output channel. Sets errno on failure.

Write a specified value to the DIO Direction register. The low 12 bits configure the corresponding DIO pins.
If a bit is set, the DIO pin of the same number is configured as an output signal.

int s16a_set_dio_direction_reg(S16aDev *s16a_p, int value);

S16A device handle returned from s16a_open

Value to write to the DIO Direction register.

Returns 0 on success or –1 on failure. Fails if s16a_p does not refer to an output channel. Sets errno on failure.